Fluids Virtual Lab
Please follow the instructions below for the assignment:
Go to the following website: http://mste.illinois.edu/murphy/WaterTower/default.html
1. Run the applet and describe the concept.
2. Move the man around. What happens to the water flow when the man moves up the hill?
3. Leave the man at the bottom of the hill. What happens when you empty out the water tower? What equation
relates pressure and depth?
Go to the following website: http://www.walter-fendt.de/ph14e/hydrostpr.htm
4. The simulation states that the hydrostatic pressure of water increases by 1 hPa for each 1 cm of depth. What is the
increase in pressure for the following liquids?
Ethanol? _______________________
Benzol? _______________________
Tetrachloromethane? _______________________
Mercury? _______________________
5. What is the unknown? Justify your answer.
Go to the following website: http://www.walter-fendt.de/ph14e/buoyforce.htm
6. Do not change the given parameters for this exercise: Lower the weight, slowly, by clicking and dragging it
downward. Notice what happens to the following variables as you lower the weight. Indicate whether the variable
increases, decreases, or remains the same.
Draught ______________
Replaced volume ______________
Buoyant force ______________
Weight of body ______________
Measured force ______________
What is “draught”? _________________________________________________
7. Choose three different sets of variables to complete the table below.
Trial One
Trial Two
Trial Three
2
Base area of body (cm )
Height of body (cm)
Density of body (g/cm3)
Density of liquid (g/cm3)
Draught (cm)
Replaced volume (cm3)
Buoyant force (N)
Weight of body (N)
Measured force (N)
Using the formula for buoyant force from #6, show that the buoyant force in the above table is correct using the
other variables in the equation. WATCH UNITS!!! Some units in the above table are not SI units!
Trial One:
Trial Two:
Trial Three:
Go to the following website: http://www.physics.usyd.edu.au/teach_res/jp/fluids/pascal.pdf
8. How does Pascal’s Principle apply to the eyeball and possible damage?
9. How does Pascal’s Principle apply to a tumor?